Laminate Sheet and Manufacturing Method Thereof

ABSTRACT

Provided is a method for manufacturing an adhesive laminate sheet. In the method, a stacked sheet in which a film, a release characteristic layer on the film, an adhesive layer on the release characteristic layer, and a base film on the adhesive layer are stacked is formed. An aging process is performed on the stacked sheet. The release characteristic layer and the film separated from the stacked sheet. A release sheet is attached on the adhesive layer of the stacked sheet from which the release characteristic layer and the film have been separated.

BACKGROUND

The present embodiments relate to an adhesive laminate sheet and amanufacturing method thereof

The adhesive laminate sheet can be used for a decoration purpose or forsemi-permanently protecting object goods on which the adhesive laminatesheet is attached.

For example, paper can be prevented from being easily damaged bymoisture or impact by attaching the adhesive laminate sheet to thepaper.

Meanwhile, in the case of separating the adhesive laminate sheet frompaper to reposition the paper after attaching the adhesive laminatesheet on the paper, the paper and/or the adhesive laminate sheet isdamaged.

Therefore, when a user intends to attach the adhesive laminate sheet,the user should attach the adhesive laminate sheet initially at anaccurate position. When the user cannot attach the adhesive laminatesheet initially at the accurate position, the paper and/or the adhesivelaminate sheet cannot be reused.

BRIEF SUMMARY

Embodiments provide an adhesive laminate sheet and a manufacturingmethod thereof.

Embodiments also provide an adhesive laminate sheet whose position canbe reset without damaging the adhesive laminate sheet and/or objectgoods to be attached, and a manufacturing method thereof.

Embodiments also provide an adhesive laminate sheet that can preventperformance deterioration of an adhesive caused by migration by notperforming a silicon release process, and a manufacturing methodthereof.

In one embodiment, an adhesive laminate sheet includes: a base film; anadhesive layer on the base film; and a release sheet attached on theadhesive layer, a pattern being formed in a surface of the release sheetattached on the adhesive layer.

In another embodiment, a method for manufacturing an adhesive laminatesheet includes: forming a stacked sheet in which a film, a releasecharacteristic layer on the film, an adhesive layer on the releasecharacteristic layer, and a base film on the adhesive layer are stacked;performing an aging process on the stacked sheet; separating the releasecharacteristic layer and the film from the stacked sheet; and attachinga release sheet on the adhesive layer of the stacked sheet from whichthe release characteristic layer and the film have been separated.

In further another embodiment, an adhesive laminate sheet includes: afirst base film; a second base film whose one side is attached on thefirst base film; an adhesive layer on the second base film; and arelease sheet attached on the adhesive layer, a pattern being formed ina surface of the release sheet attached on the adhesive layer.

The details of one or more embodiments are set forth in the accompanyingdrawings and the description below. Other features will be apparent fromthe description and drawings, and from the claims.

BRIEF DESCRIPTION OF THE DRAWINGS

FIGS. 1 and 2 are views explaining an adhesive laminate sheet accordingto an embodiment.

FIGS. 3 to 6 are views explaining a method for manufacturing an adhesivelaminate sheet and the characteristic of the adhesive laminate sheet.

DETAILED DESCRIPTION

Reference will now be made in detail to the embodiments of the presentdisclosure, examples of which are illustrated in the accompanyingdrawings.

FIGS. 1 and 2 are views explaining an adhesive laminate sheet accordingto an embodiment.

Though the adhesive laminate sheet can be used in various shapes forvarious goods, the adhesive laminate sheet according to the embodimentsis used for preventing paper from being damaged or spoilt, or protectingthe paper from moisture. However, the embodiments are not intended forlimiting the scope or application field of the present disclosure butprovided for easy understanding of the present disclosure.

Referring to FIGS. 1 and 2, the adhesive laminate sheet includes a firstbase film 10 and a second base film 20. An adhesive layer (not shown)coated with an adhesive material is formed on the second base film 20. Arelease sheet 30 having a fine pattern structure is attached on theadhesive layer.

The first base film 10 and the second base film 20 are formed with theirone sides attached to each other. After paper P is disposed between thefirst base film 10 and the second base film 20, the paper P and thefirst base film 10 are attached on the second base film 20 while therelease sheet 30 is removed.

The adhesive laminate sheet according to the embodiment transfers thefine pattern stricture onto the surface of the adhesive layer using therelease sheet 30 having the fine pattern structure, so that the adhesivelayer has a semi-adhesive characteristic allowing the adhesive layer tobe repositioned at an initial adhesion stage and has a strong adhesivecharacteristic as time elapses after the adhesive layer is attached.

Therefore, when the second base film 20 is attached on the paper P andthe first base film 10 after the release sheet 30 is removed, the damageof the second base film 20 including the paper and/or the adhesive layeris small even when the second base film 20 and the paper P are separatedfrom each other at an initial adhesion stage to reposition the paper Pand then the second base film 20 and the paper P are attached again.

Hereinafter, an adhesive laminate sheet according to an embodiment willbe described in more detail with reference to FIGS. 3 to 6.

FIGS. 3 to 6 are views explaining a method for manufacturing an adhesivelaminate sheet and the characteristic of the adhesive laminate sheet.

Referring to FIG. 3, a second base film 20 includes a second base filmlayer 21 and an adhesive layer 22, and is attached on a film 42 on whicha release characteristic layer 41 is formed.

That is, after the release characteristic layer 41 is formed on the film42, the adhesive layer 22 is formed on the release characteristic layer41 using an adhesion coating equipment. Also, the second base film layer21 is attached on the adhesive layer 22.

For example, the film 42 can be formed of at least one of a polyethyleneterephthalate (PET) film, a poly vinyl chloride (PVC) film, a polypropylene (PP) film, and paper. The film 42 can be formed to have athickness of 150-300 μm.

Also, the release characteristic layer 41 can be formed of at least oneof a rubber-based coating agent, a wax-based coating agent, anurethane-based coating agent, and a polyamide-based coating agent. Therelease characteristic layer 41 can be formed to have a thickness of0.5-2 μm.

Also, the adhesive layer 22 can be formed of at least one of anacryl-based adhesive, a rubber-based adhesive, an urethane-basedadhesive, and a polyester-based adhesive. The adhesive layer 22 can beformed to have a thickness of 15-30 μm.

Also, the second base film layer 21 can be formed of at least one of aPET film, a PVC film, and a PP film. The second base film layer 21 canbe formed of a PVC film having high transparency to have a thickness of50-100 μm.

An aging process is performed with the second base film layer 21, theadhesive layer 22, the release characteristic layer 41, and the film 42stacked as illustrated in FIG. 3. The aging process can be performed byleaving the stacked layer at the temperature range of 40-60° C. for24-48 hours.

The aging process is for stabilizing the characteristic of the adhesivelayer 22. The aging process allows the adhesive force of the adhesivelayer 22 to be uniform through volatilization of a residual solventincluded in the adhesive layer 22 and chemical stabilization of aresidual polymer.

Referring to FIG. 4, after the aging process is performed, the film 42on which the release characteristic film 41 has been formed is removed.Then, a releasing sheet 30 having a fine pattern structure is attachedto the adhesive layer 22.

The releasing sheet 30 has a fine pattern structure in a direction inwhich the releasing sheet 30 is attached. The releasing sheet 30 can beformed of at least one of a PVC film, a PE film, and paper to have athickness of 100-200 μm.

Therefore, a second base film 20 on which the releasing sheet 30 hasbeen attached is manufactured as illustrated in FIGS. 1 and 2.

In a related art adhesive laminate sheet, a silicon release process hasbeen performed on a releasing sheet for protecting an adhesive layer. Inthe case where the silicon release process is performed on the releasesheet, not only costs increase in an aspect of process, but alsoperformance deterioration of the adhesive layer may be generated due tosilicon migration when the silicon-release processed release sheetattached on the adhesive layer is stored for a long time.

Meanwhile, since the adhesive layer 22 is stabilized through the agingprocess in the adhesive laminate sheet according to the embodiment, aseparate silicon release process does not need to be performed on therelease sheet 30 and thus the performance deterioration is notgenerated.

Referring to FIG. 5, when paper P is disposed on the first base film 10,and the release sheet 30 attached on the second base film 20 is removed,the fine pattern structure formed in the release sheet 30 is transferredto the adhesive layer 22 of the second base film 20.

Therefore, when the first base film 10, the paper P, and the second basefilm 20 are attached, a semi-adhesive characteristic allowingrepositioning through the Fine pattern structure is achieved.

However, referring to FIG. 6, when a time elapses after the first basefilm 10, the paper P, and the second base film 20 are attached, a resinflow phenomenon is generated to the adhesive layer 22 and an adhesivearea increases, so that a strong adhesive characteristic is achieved.

That is, when the release sheet 30 is removed, an uneven fine patternstructure is transferred to the adhesive layer 22. At an initialadhesive stage, the protrusion portion of the fine pattern structure ofthe adhesive layer 22 contacts the surface of the paper P to provide thesemi-adhesive characteristic. However, when a predetermined timeelapses, the protrusion portion of the fine pattern structure of theadhesive layer 22 gets flat due to the resin flow phenomenon asillustrated in FIG. 6, so that the adhesive area increases to provide astrong adhesive characteristic.

Also, the fine pattern structure of the adhesive layer 22 allows air toeasily flow during a laminating operation to effectively removelimitations such as a bubble and an air pocket that may occur during thelaminating operation.

Any reference in this specification to “one embodiment,” “anembodiment,” “example embodiment,” etc., means that a particularfeature, structure, or characteristic described in connection with theembodiment is included in at least one embodiment of the invention. Theappearances of such phrases in various places in the specification arenot necessarily all referring to the same embodiment. Further, when aparticular feature, structure, or characteristic is described inconnection with any embodiment, it is submitted that it is within thepurview of one skilled in the art to effect such feature, structure, orcharacteristic in connection with other ones of the embodiments.

Although embodiments have been described with reference to a number ofillustrative embodiments thereof, it should be understood that numerousother modifications and embodiments can be devised by those skilled inthe art that will fall within the spirit and scope of the principles ofthis disclosure. More particularly, various variations and modificationsare possible in the component parts and/or arrangements of the subjectcombination arrangement within the scope of the disclosure, the drawingsand the appended claims. In addition to variations and modifications inthe component parts and/or arrangements, alternative uses will also beapparent to those skilled in the art.

1. An adhesive laminate sheet comprising: a base film; an adhesive layeron the base film; and a release sheet attached on the adhesive layer, apattern being formed in a surface of the release sheet attached on theadhesive layer.
 2. The adhesive laminate sheet according to claim 1,wherein the release sheet is not silicon release-processed.
 3. Theadhesive laminate sheet according to claim 1, wherein the base filmcomprises at lease one of a polyethylene terephthalate film, a polyvinyl chloride film, and a poly propylene film.
 4. The adhesive laminatesheet according to claim 1, wherein the adhesive layer comprises atleast one of an acryl-based adhesive, a rubber-based adhesive, anurethane-based adhesive, and a polyester-based adhesive.
 5. The adhesivelaminate sheet according to claim 1, wherein the release sheet comprisesat lease one of a poly vinyl chloride film, a polyethylene film, andpaper.
 6. A method for manufacturing an adhesive laminate sheet, themethod comprising: forming a stacked sheet in which a film, a releasecharacteristic layer on the film, an adhesive layer on the releasecharacteristic layer, and a base film on the adhesive layer are stacked;performing an aging process on the stacked sheet; separating the releasecharacteristic layer and the film from the stacked sheet; and attachinga release sheet on the adhesive layer of the stacked sheet from whichthe release characteristic layer and the film have been separated. 7.The method according to claim 6, wherein the forming of the stackedsheet comprises: forming the release characteristic layer on the film;forming the adhesive layer on the release characteristic layer; andattaching the base film on the adhesive layer.
 8. The method accordingto claim 6, wherein the aging process is performed at a temperaturerange of 40-60° C. for 24-48 hours.
 9. The method according to claim 6,wherein the release sheet is not silicon release-processed.
 10. Themethod according to claim 6, wherein the base film comprises at leastone of a polyethylene terephthalate film, a poly vinyl chloride film,and a poly propylene film.
 11. The method according to claim 6, whereinthe adhesive layer comprises at least one of an acryl-based adhesive, arubber-based adhesive, an urethane-based adhesive, and a polyester-basedadhesive.
 12. The method according to claim 6, wherein the release sheetcomprises at lease one of a poly vinyl chloride film, a polyethylenefilm, and paper.
 13. The method according to claim 6, wherein the filmcomprises at leases one of a polyethylene terephthalate film, a polyvinyl chloride film, a poly propylene film, and paper.
 14. The methodaccording to claim 6, wherein the release characteristic layer is formedof at least one of a rubber-based coating agent, a wax-based coatingagent, an urethane-based coating agent, and a polyamide-based coatingagent.
 15. An adhesive laminate sheet comprising: a first base film; asecond base film whose one side is attached on the first base film; anadhesive layer on the second base film; and a release sheet attached onthe adhesive layer, a pattern being formed in a surface of the releasesheet attached on the adhesive layer.
 16. The adhesive laminate sheetaccording to claim 15, wherein the release sheet is not siliconrelease-processed.
 17. The adhesive laminate sheet according to claim15, wherein the second base film comprises at lease one of apolyethylene terephthalate film, a poly vinyl chloride film, and a polypropylene film.
 18. The adhesive laminate sheet according to claim 15,wherein the adhesive layer comprises at least one of an acryl-basedadhesive, a rubber-based adhesive, an urethane-based adhesive, and apolyester-based adhesive.
 19. The adhesive laminate sheet according toclaim 15, wherein the release sheet comprises at lease one of a polyvinyl chloride film, a polyethylene film, and paper.